Lubricator.



D. F. KILGOUR.

LUBRICATOR.

APPLICATION men Nov. rr". 1913.

Patented. Apr. 20, 1915.

Inventor: fiwz'ghifi'ifa'lgoaw; 692W Witnesses.-

aw 6 MM THE NORRIS PETERS CO4. PHDTO-LITHO" WASHINGTON, D C

DWIGHT F. KILGOUR, OF LEXINGTON, MASSACHUSETTS.

LUBRICATOR.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed November 11, 1913. Serial No. 800,389.

To all whom it may concern:

Be it known that I DWIGHT F. KILGOUR, a citizen of the United States,and a resident of Lexington, county of Middlesex, and Commonwealth ofMassachusetts, have invented an Improvement in Lubricators, of which thefollowing description, in connection with the accompanying drawings, isa specification, like characters on the drawings representing likeparts.

This invention relates to lubricators for elevator guide rails and otheruses and, among other objects, provides a strong, simple device forsupplying a proper amount of lubricant to the rail.

The character of the invention may be best understood by reference tothe following description of an illustrative embodiment thereof shown inthe accompanying drawlng wherein:

Figure l is a side elevation of an illus-- tratlve lubricator embodyingthe invention and shown as applied to an elevator guide rail; and Fig. 2is a rear elevation of the lubricator shown in Fig. 1.

Referring to the drawing, the illustrative lubricator there shown asembodying the invention comprises a reservoir 1 shown herein as of metalcast into cylindrical form. To permit the filling of the reservoir it isprovided with a neck '3 having a cap 5 threaded therein.

To conduct the lubricant from the reservoir to the guide rail or othermember to be lubricated, there is provided a wick 7 preferablysufiicientlv long to extend from the bottom nearly to the top of thereservoir, where it is led through an outlet herein in the form of ashort neck 9 secured to the side of the reservoir. The wick projectsthrough this neck and is adapted to engage the guide rail.

To secure the wick in the neck and prevent it from being pushed backinto the reservoir in pressing against the rail and also to variablycompact the wick fiber within said neck to vary the freedom of flow ofthe lubricant through the neck, there is provided a screw 11 tapped intosaid neck and extending a substantial distance into the latter.

The reservoir preferably is pivotallv mounted so as to tilt toward themember to be lubricated. To this end the reservoir is provided with alug 13 depending centrally from the bottom thereof and received betweenears of a support, herein in the form of a slide plate 15. A pin 17passes through registering holes in said lug and ears, thereby providinga fulcrum permitting the free tilting of the reservoir.

By the construction described the brunt of the weight of the reservoiris borne by the support. For the best lubrication, the wick should bepressed lightly against the rail to prevent undue compacting of the wickfibers such as might retard the proper feeding of the lubricanttherethrough. The light pressure for the wick is also important toprevent the same from wearing out too rapidly with the necessity offrequent adjustment and replacement. The reservoir, while pressedlightly against the rail, should be freeto rock backward and yield inresponse to any irregularities which might exist in said rail and alsoto take up lost motion due to the play between the elevator car and therail in the course of its travel.

In my copending application is shown a lubricator which is rockedlaterally with the desired niccty of pressure by gravity. This is highlysatisfactory for certain uses, but when used on ship the motion of theship is liable to throw the lubricator out of contact with the elevatorguide rail or member to be lubricated.

One of the objects of this invention is to provide 'a lubricator whichwill not be sub ject to this objection. To this end the reservoir isprovided with a helical spring 17 of light gage wire and considerablelength, said spring being confined between the reduced end of an arm 19projecting rearwardly from the reservoir and a stud 21 projectingupwardly from said slide plate 15. The point of application of thespring to the reservoir is offset a substantial distance from thefulcrum point of the reservoir and therefore the light spring gainsmechanical advantage for rocking the reservoir toward the member to belubricated. The spring being of considerable length and of light gagewire may experience a substantial compression contracting the coilswithout materially increasing the pressure of the spring. As a resultthe spring will exercise a substantially uniform pressure throughout theslight tilting movements of the reservoir in the course of its movementI the lubricant draws along the guide rail and maintain a desiredsubstantially uniform nicety of pressure of the wick against the rail.

The lubricator is shown herein as mountl on a usual shoe 23 which isconnected to the elevator car. In some cases it may be desired to adjustthe reservoir toward or from the rail to different fixed positionsaccording to different conditions. To permit this, the support slide 15is provided with a depending rib 25 received in the slot of a forkedbracket 27 secured to said shoe. To clamp the support slide 15 in adifferent position of adjustment relative to said forked bracket thereis provided a screw 31 having a washer interposed between its head andthe under face of the forked bracket and somewhat larger than the slotin said bracket. When this screw is set up it will tightly draw theslide plate 15 and clamp the same to the bracket.

By my invention there is provided a lubricator having many advantages.The reservoi-r is always rocked to press its wick lightly against themember to be lubricated with the desired nicety of pressure. In marineuse if the motion of the ship should rock the wick momentarily out ofengagement with said member, the spring would return the same promptlyto said member. The wick in extending upward and out of the latter up bycapillary attraction and therefore prevents an excessive and wastefulfeeding of the lubricant and contributes to the supplying of the properamount of lubricant for the best lubrication and economy.

Having described one illustrative embodiment of the invention withoutlimiting the same thereto, what I claim as new and desire to secure byLetters Patent is:

1. A lubricator comprising in combina- Copies of this patent may beobtained for five cents each, by addressing the tion, a support; areservoir fulcrumed thereon and provided with a wick outlet for a 111-bricating wick leading from within said reservoir, the latter beingarranged with the brunt of its weight on said support, and spring meansfor pressing the reservoir toward a member to be lubricated.

2. A lubricator comprising in combination, a support; a reservoirfulcrumed thereon and provided with a wick outlet for a lubricatingwick, said reservoir being. arranged with'the brunt of its weight on:said support, and spring means connecting said reservoir and supportfor pressing the former toward a member to be lubricated with lightengaging contact.

3. A lubricator comprising in combination, a-support; areservoirfulcrumed thereon and provided with a wick outlet for alubricating wick; an arm projecting from said reservoir; and a helicalspring interposed between said arm and said support for tilting saidreservoir toward a member to be lubricated.

4:. A lubricator comprising in combina- '7 tion,:a support; a reservoirfulcrumed there on and provided with a wick outlet for alubricating'wick; and a spring connecting said reservoir with saidsupport for tilting said reservoir to present 1ts wick in lightengagingcontact with a member to be. lubricated, said support havingprovision for permittingathe adjustment ofsaid reservoir toward orfromsaid member to difierent fixed positions.

Intestimony whereof, I have signed my name to this specification,inthepresence of two subscribing witnesses. i DWIGHT F. KILGOUR.

Witnesses:

HENRY T. W'ILLLAMs, ROBERT H. KAMMIER.

Commissioner of Patents.

Washington, 110.

